"Machining" surface treatment

2024/06/04

machining surface treatment:

1, chemical polishing: under the action of abrasive, chemical solvent, the surface of the workpiece chemical or electrochemical changes, so as to achieve the purpose of a process method;

2. Anodization: A method of coating an oxide film containing metal cations on the surface of the workpiece and oxidizing the color metal layer under appropriate conditions. Metal anodizing processes include electrolytic oxidation, chemical oxidation and plasma oxidation;

3, sandblasting: a process method to produce fine sand-like roughness on the surface of the workpiece by mechanical method to improve its surface friction characteristics;

4. Electroplating: A process of plating a layer of metal film on the surface of a metal or alloy by chemical or electrolytic method. Electroplating is a widely used and large amount of surface treatment technology in metal processing.

The manufacturing precision of meticulous machining is high, and the surface of the product is smooth during the use of the product, which means that the meticulous machining produced can save a lot of machining work and can be directly used in life. There will be many gray-black round shallow pits on the surface of meticulous machining. The pits will be filled with slag substances before the equipment is cleaned. The degree of these substances will directly affect the quality of our castings.

Meticulous machining is the use of a cast iron material, its comprehensive performance is close to steel, it is based on its good performance, has been successfully used for casting some of the complex force, strength, toughness, requirements of the better parts. Ductile iron has developed into a common cast iron material second only to gray cast iron. The so-called "iron on behalf of steel", mainly refers to the ductile iron.

Meticulous mechanical processing matrix related departments are divided into three types: ferrite, pearlite, iron gray iron casting related departments are characterized by flake graphite. Elemental body + pearlite. C and Si are elements that can be graphitized. In order to make cast iron gray in casting, and not to control the composition of cast iron to 2.5-4.0 C and 1-2.5 Si too much and coarse graphite sheet. Elements such as AlCuNiCo in cast iron are also graphitized. Carbide forming elements such as nCrWMoV may also reduce the mechanical properties and fluidity of cast iron.

None

Machining Important Index and Structure Design

Return to

What are the factors that affect high product components?

Machining has been used in many applications, because the current mechanical manufacturing requirements for output has declined, the requirements for size and shape have gradually increased, and high-product parts have a new development trend. The use of lathes requires different turning methods, but grinding, cutting, milling and other processes can be carried out in one lathe, and the development trend of process integration is more obvious.

Precautions and industrial requirements for detailed machining

Fine machining is a kind of casting process with little or no cutting. It is a good process technology in the casting industry, and its application is common. The reasons for choosing meticulous machining are as follows

"Machining" surface treatment

Machining Important Index and Structure Design

Meticulous mechanical processing in the production process because of its transition with a small size, so that it will make its mechanical properties good, meticulous mechanical processing can reach the degree of its fluidity and does not form bright crystal, the general temperature is 715~740 ℃. The production temperature of meticulous machining can have good fluidity in the process of transferring the melt to a certain extent. In the process of selecting the casting temperature, the equipment needs to be determined according to some factors such as the distance of transferring the melt and the cooling situation in the transferring process.